Hi all, I have an LS1 engine that I purchased from someone in Victoria recently, they engine was a good price, but had a few small parts missing. One of those is the Coolant bypass/crossover lines on the heads. On the earlier LS1's they connect to the front and rear of the heads and then to the radiator I believe. On the LS6's, they blocked off the back holes and just used a front connecting pipe. I need to get one of these ASAP, be it genuine GM or aftermarket, I do not care if it's second hand or brand new. Does anybody have one laying around that would be willing to sell, or know where to get one from, or have part numbers to make up ones own kit??